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ecosystemversion 1published 2026-05-05

Canadian Boreal Forest

The Canadian boreal forest is a vast, globally significant ecosystem that acts as a critical terrestrial carbon storehouse, though it faces increasing pressure from climate-driven wildfires and industrial resource extraction. Spanning nearly 6 million square kilometers, this region covers over 58 percent of Canada's land mass and represents one of the largest remaining intact forest and wetland ecosystems on Earth.

The forest plays a vital role in the global climate system by sequestering and storing massive quantities of carbon, primarily within its soil, peatlands, and permafrost rather than just in living trees. Estimates of this carbon storage vary; for instance, some sources estimate the region holds 67 billion tonnes of carbon, while others cite figures as high as 186 billion tonnes. This long-term storage capacity is essential for climate regulation, as these features can hold carbon for thousands of years. Wildfires are a natural and necessary component of the boreal ecosystem, helping to maintain biodiversity and regenerate certain tree species. However, climate change is altering these fire regimes, leading to more frequent and severe wildfire seasons. These extreme events can release vast amounts of previously sequestered carbon into the atmosphere, potentially shifting parts of the forest from a net carbon sink to a net carbon emitter. In addition to wildfire, the boreal forest is subject to industrial activities, including logging, mining, and oil and gas extraction. These resource extraction operations can disrupt the landscape and, when they disturb deep soil and peatland layers, risk releasing ancient carbon reservoirs. While the forest provides significant ecosystem services, such as water filtration and habitat for diverse wildlife, only a small fraction of the region is currently protected, sparking ongoing debate about the balance between industrial development and long-term ecological conservation.
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  • v1Canadian Boreal Forestpublished2026-05-05